Physiology of Skin Flashcards
How many layers are there of the epidermis?
5
What are the layers of the epidermis?
Keratin Layer Stratum Lucidium Granular Layer Prickle Cell Layer Basal Layer
What are the two main layers of skin?
Epidermis
Dermis
Where are Melanocytes found?
Throughout the epidermis
What is the role of Melanocytes?
They contain melanosomes
They convert tyrosine to melanin
Why is melanin important?
It protects DNA from UV radiation
Where are Langerhans Cells found?
Prickle cell layer
What is the role of Langerhan’s Cells
Antigen Presenting Cells - present antigens to T-cells
Where else are Langerhan’s Cells found?
Dermis
Lymph nodes
What is the role of eccrine glands?
Cooling by evaporation
Where are sebaceous glands found in the greatest numbers?
Chest
Face
What are eccrine glands under the control of?
Sympathetic control
What are sebaceous glands responsive to?
Hormones
What are apocrine glands responsive to?
Androgen dependent
Where are apocrine glands found in the greatest numbers?
Axillae
Perineum
